Bug 730964 (CVE-2011-1836)

Summary:	CVE-2011-1836 ecryptfs-utils: ecryptfs-recover-private insecure permissions on the temporary mount point
Product:	[Other] Security Response	Reporter:	Tomas Hoger <thoger>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	esandeen, mhlavink
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-08-08 10:58:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	729474
Bug Blocks:	729476

Description Tomas Hoger 2011-08-16 12:05:34 UTC

Quoting Ubuntu advisory:

Marc Deslauriers discovered that eCryptfs incorrectly handled permissions during recovery. A local attacker could use this flaw to possibly access another user's data during the recovery process. This issue only applied to Ubuntu 11.04. (CVE-2011-1836)

References:
http://www.ubuntu.com/usn/usn-1188-1/
https://launchpad.net/bugs/732628

Patch is attached in the bug that track other issues from the advisory:
https://bugzilla.redhat.com/show_bug.cgi?id=729465#c4

Comment 1 Tomas Hoger 2011-08-16 12:09:03 UTC

As was noted in bug #729465, comment #8:

CVE-2011-1836 only affects Fedora; ecryptfs-recover-private does not exist in
ecryptfs-utils-82 (which is what is shipped with Red Hat Enterprise Linux 6).

Statement:

Not vulnerable. This issue did not affect the versions of ecryptfs-utils as
shipped with Red Hat Enterprise Linux 5 or 6.